Telemetric signal.



R. R. MINTON.

TELEMETRIC SIGNAL.

APPLICATION FILED JAN. I5. 1917 1,276,558. Patented Aug. 20, 1918.

UNITED STATES PATENT OFFICE. Y

' ROBERT E. MINTON, OF CLEVELAND, OHIO.

'rnnnmn'rnrc SIGNAL.

Specification of Letters Patent.

Patented Aug. 20, 1918.

Application filed January 15, 1917. Serial No. 142,528.

To all whom it may concern:

Be it known that. I, ROBERT R. Mm'ron, a citiz en of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Telemetric "Signals, of which the following is'a speciciency and operation high.

V fication.

The present invention has reference, generally, to signals; and, 'the invention relates more particularly to an mproved .telemetri'c signal.

The invention has for its prlnclpal ob ect;

to provide an'electrical signal particularly adapted for use in connection with lubricating systems, whereby, when the lubricant within the reservoir falls below a predetermined level'the signal will be actuated'and the operator warnedof the' condition of the reservoir.

As an object of equal importance, the invention aims to provide a novel form of circuit closing means which are so positioned as to insure the closing of the alarm circuit at-theproper time. I

Still further, it is an object of my invention to rovide an adjustable circuit closing means or the signal in order that the same can be operated at difl'erent periods, depending entirely upon the height of the lubricant within the reservoir.

Among other aims and objects of the invention may be recited, the provision of a signal of t e character mentioned, with a view to compactness, and in which the number of parts are few, the construction simple, the cost of production small, and effi- The invention consists, furthermore, in the novel arrangements and combinations of the parts of the device, as well as-the details of the construction of the same, all

of which will be more fully described in the ployed in all ofthe above described views to indicate corresponding parts.

Referring now to the several figures of the said drawings, my improved signal is particularly adapted for use 1n connection with the oil reservoirs of lubrieatingsystems.

generally employed in connection with motor driven vehicles and the like, the said reservoir being fragmentally shown and indicated by the numeral 1.

The signal controlling means includes atubular cylindrical gage member 2,-the top and bottom portions of which are closed by caps 3 and 4;, the cap 4, as will be noted,

" being provided with a concentrically. dis Y posed opening 5, the purpose of which will be subsequently apparent. Arranged adjacent the lower end of the tubular gage 2 and communicating therewith is an externally I screw threaded nipple 6, the outer end of which is turned into engagement with a complementally threaded opening 7 as formed within the oil-reservoir 1 at a point in proximity of the bottom thereof. A float member 8. of a shape complemental to the shape of the gage member 2 and of a slightly less diameter 1s arranged within the same and carries upon its" upper portion a guide rod 9, the said guide rod projecting .through the concentrically disposed opening 5 formed within the closure cap-4. Thus, it will be appreciated, that binding of the float 8 during vertical movement of the same within the gage 2 will be prevented through the medium of the said guide rod 9.

Referring now to the novel circuit means whereby the alarm signal is actuated to warn the operator, there is formed within the closure cap'3 an eccentrically arranged opening, through which an insulating bushmg 10 formed of hard rubber fiber or the like is passed. A contact screw 11 is reeeived bvlthe thread'ed here as arranged within the bushing 10 and has turned into engagement with its lower end locking and binding nuts indicated by the numeral 12. It is to be noted, that the contact screw 11 when arranged within the gage 2 is disposed ofl center to the buoyant member or float 8 and consequently, when the same is engaged therewith, the float will be tipped and the guide rod 9 thereof engaged with an adjacent portion of the closure cap 4 as bordering the opening 5 therein.

An external circuit 13 is provided and has 'one of the opposite terminals thereof enwith the nipple being indicated by the numeral 14t- A suitable source of energy 15 is included in the external circuit 13, together, with a bell 16. In this particular connection, it will be readily understood, that any form of signal either audible or visual may be used in connection with my improved telemetric signal, such as conditions or preference may dictate.

It is, of course, to be understood that the containers 2, cap a, float 8 and rod 9 are formed of suitable conducting material, therebyafi'ording a path for the electrical current whereby the alarm 16 may be operated.

"In operation, a certain amount of lubri cant as contained by the reservoir 1 will be permitted to fiow into the gage 2 and will seek a height therein corresponding to the height ofthe lubricant within the reservoir 1.. As the quantity or height of lubricant diminishes within the reservoir 1, it will accordingly diminish within the gage 2 and will cause the lowering of the Heat 8, thus, when a suflicient amount of lubricant has been used the float 8 will be engaged with the contact screw 11, tipped and the guide rod 9 thereof engaged with the closure cap 4. Such engagement will cause the closing of the external circuit 13 and the ringing of the bell 16, thereby, warning the operator of the conditions of the oil reservoir.

If desired, the contact screw 11 may be adjusted to any particular height to permit operation of the signal at the desired period.

Manifestly, the construction shown is capable of considerable modification and such modification as is within the scope of my claims, I consider within the spirit of my invention. 1

I claim: I

1. A telemetric alarm including a fluid container formed of conducting material having a concentric opening in the top thereof, movable buoyant means formed of conducting material arranged in said container, an upwardly projecting rod of conductlng material thereon extending through the opening in the container, a contact element arranged on and insulated from the bottom of said container-and disposed eccentric to the buoyant means whereby to cause tipping of the same when engaged therewith and engagement between the rod and top of the container, and an external electric circuit having the terminals thereof connected to said contact element and said container.

2. A telemetric alarm including a fluid container formed of conducting material having a centrally apertured cap, a movable float formed of conducting material arranged in said container and out of engagement therewith, a vertically disposed upwardly projecting rod of conducting material on said float slidable vertically through the aperture in the top of said container and normally out of engagement therewith, an adjustable contact element arranged on and insulated from the bottom of the container arranged oftlcenter of said float to tilt the same upon engagement whereby the rod will engage the edge oi. the opening in said container cap, and an external electric circuit having the terminals thereof connected to said contact element and said container. as and for the purpose set forth.

In testimony whereof, I afiix my signature hereto.

' RUBERT 1t. MINTON. 

